Feds now reviewing prospect of COVID-19 boosters for fully vaccinated people … Cleveland Clinic, Mount Sinai won’t give Aduhelm to patients … FDA chief acknowledges possible missteps on Aduhelm approval … U.S. surgeon general issues advisory: Misinformation threatening COVID-19 responseFlu shot reduces some COVID-19 ICU admissions, sepsis and stroke, study finds … Cancer patients have slower response to Pfizer COVID-19 vaccine in trial